Heavy bursts of visitors are knocking my landing page offline. Each spike fills the nginx error log with 2026/02/09 20:32:47 [error] 949181#949181: *409046 connect() to unix:/var/run/php/php7.4-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: 200.14.98.85, server: xxxxxxx.com, request: "GET /pW321xkxUy/?zoneid=9843359 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php/php7.4-fpm.sock:", host: "xxxxxxx.com" I’ve confirmed the trigger is a high number of simultaneous users, not bots or unusual request types. What I need—urgently—is a Linux-savvy engineer who can stabilise the stack so the site stays up no matter how fast traffic arrives. Stability and uptime are my top priorities; raw speed tweaks are welcome only if they don’t compromise resilience. You’ll get SSH access to the server and any config files you require. I’m expecting a concise root-cause analysis, tuned system parameters (nginx, kernel limits, upstream service, etc.), and a quick validation run that shows the error no longer appears under load. I’m ready to move the moment you are and would like this wrapped up ASAP.